Source: Woodcraft Folk Games Games Games

One person is the storyteller. They stand holding their hands out, palms down, fingers spread. Each player has to hold on lightly to one of the storyteller's fingers or thumbs.

They then proceed to tell a story (on any subject), incorporating the word "POISON" at some point. On hearing "POISON", the other players let go of the storyteller's finger/thumb and run. The storyteller then tries to catch someone. The first person to be caught becomes the storyteller for the next game.